diff --git a/auth_utility.go b/auth_utility.go
index d4abaaf..387392d 100644
--- a/auth_utility.go
+++ b/auth_utility.go
@@ -21,20 +21,21 @@ var secret = "webutility"
 
 type Role struct {
 	Name string `json:"name"`
-	ID   int32  `json:"id"`
+	ID   int64  `json:"id"`
 }
 
 // TokenClaims are JWT token claims.
 type TokenClaims struct {
+	// extending a struct
+	jwt.StandardClaims
+
+	// custom claims
 	Token     string `json:"access_token"`
 	TokenType string `json:"token_type"`
 	Username  string `json:"username"`
 	Role      string `json:"role"`
-	RoleID    int32  `json:"role_id"`
+	RoleID    int64  `json:"role_id"`
 	ExpiresIn int64  `json:"expires_in"`
-
-	// extending a struct
-	jwt.StandardClaims
 }
 
 func InitJWT(appName, secret string) {
diff --git a/format_utility.go b/format_utility.go
index 99a4126..b40dbf3 100644
--- a/format_utility.go
+++ b/format_utility.go
@@ -1,8 +1,8 @@
 package webutility
 
 import (
-	"time"
 	"fmt"
+	"time"
 )
 
 // UnixToDate converts given Unix time to local time in format and returns result:
@@ -14,7 +14,10 @@ func UnixToDate(unix int64) time.Time {
 // DateToUnix converts given date in Unix timestamp.
 func DateToUnix(date interface{}) int64 {
 	if date != nil {
-		t := date.(time.Time)
+		t, ok := date.(time.Time)
+		if !ok {
+			return 0
+		}
 		return t.Unix()
 
 	}
@@ -45,4 +48,3 @@ func LikeQuotes(stmt string) string {
 	}
 	return stmt
 }
-
diff --git a/http_utility.go b/http_utility.go
index 8ca7e55..07a79ab 100644
--- a/http_utility.go
+++ b/http_utility.go
@@ -28,6 +28,14 @@ func SetDefaultHeaders(w http.ResponseWriter) {
 	w.Header().Set("Content-Type", "application/json; charset=utf-8")
 }
 
+func ReqLocale(req *http.Request, dflt string) string {
+	loc := req.FormValue("locale")
+	if loc == "" {
+		return dflt
+	}
+	return loc
+}
+
 // 2xx
 func Success(w http.ResponseWriter, payload *Payload, code int) {
 	w.WriteHeader(code)
diff --git a/json_utility.go b/json_utility.go
index 71d848c..2fbeb45 100644
--- a/json_utility.go
+++ b/json_utility.go
@@ -29,7 +29,7 @@ var logger *gologger.Logger
 
 func init() {
 	var err error
-	logger, err = gologger.New("metadata", gologger.MaxLogSize100KB)
+	logger, err = gologger.New("webutility", gologger.MaxLogSize100KB)
 	if err != nil {
 		fmt.Printf("webutility: %s\n", err.Error())
 	}
diff --git a/locale_utility.go b/locale_utility.go
index 2c0b64e..298f4b9 100644
--- a/locale_utility.go
+++ b/locale_utility.go
@@ -2,11 +2,14 @@ package webutility
 
 import (
 	"encoding/json"
+	"errors"
 	"io/ioutil"
 )
 
 type Dictionary struct {
-	locales map[string]map[string]string
+	locales       map[string]map[string]string
+	supported     []string
+	defaultLocale string
 }
 
 func NewDictionary() Dictionary {
@@ -32,6 +35,7 @@ func (d *Dictionary) AddLocale(loc, filePath string) error {
 		l[k] = v.(string)
 	}
 	d.locales[loc] = l
+	d.supported = append(d.supported, loc)
 
 	return nil
 }
@@ -40,11 +44,23 @@ func (d *Dictionary) Translate(loc, key string) string {
 	return d.locales[loc][key]
 }
 
-func (d *Dictionary) SupportsLocale(loc string) bool {
-	for k, _ := range d.locales {
-		if k == loc {
+func (d *Dictionary) HasLocale(loc string) bool {
+	for _, v := range d.supported {
+		if v == loc {
 			return true
 		}
 	}
 	return false
 }
+
+func (d *Dictionary) SetDefaultLocale(loc string) error {
+	if !d.HasLocale(loc) {
+		return errors.New("dictionary does not contain translations for " + loc)
+	}
+	d.defaultLocale = loc
+	return nil
+}
+
+func (d *Dictionary) GetDefaultLocale() string {
+	return d.defaultLocale
+}